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  • 1
    ISSN: 0378-1119
    Keywords: Autographa califomica ; N-linked glycans ; glycosylation ; polyhedrin promoter ; recombinant DNA
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1920
    Keywords: Lumbar disk surgery ; Vascular complications ; Angiography ; Computed tomography ; Sonography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Vascular injuries in lumbar disk surgery, although rare, are serious complications which may be overlooked due to a broad range of clinical manifestations. It is important that surgeons and radiologists be aware of these potentially fatal complications and develop an appropriate symptom-based diagnostic paradigm. We reviewed 8099 consecutive cases of lumbar disk surgery, performed over a 14-year period at a single institution, for postoperative vascular complications. We identified four patients (0.05%) with lumbar disk surgery-related vascular complications: intraoperative lacerations of the abdominal aorta and median sacral artery, an arteriovenous fistula between the left common iliac artery and vein detected 19 days postdiskectomy, and a partially thrombosed aortic aneurysm with an arteriovenous fistula between the aneurysm and the inferior vena cava, diagnosed 11 months after surgery. The majority of cases in the literature of vascular injury in lumbar disk surgery were reported prior to 1965. Diagnostic approaches described in that period do not reflect the great range of diagnostic techniques available today. Angiography remains the gold standard for diagnosis and guidance as to surgical repair. However, a high index of suspicion based on clinical signs and/or the use of sonography or CT is important in the detection of these complications.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1920
    Keywords: Key words Lumbar disk surgery ; Vascular complications ; Angiography ; Computed tomography ; Sonography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Vascular injuries in lumbar disk surgery, although rare, are serious complications which may be overlooked due to a broad range of clinical manifestations. It is important that surgeons and radiologists be aware of these potentially fatal complications and develop an appropriate symptom-based diagnostic paradigm. We reviewed 8099 consecutive cases of lumbar disk surgery, performed over a 14-year period at a single institution, for postoperative vascular complications. We identified four patients (0.05 %) with lumbar disk surgery-related vascular complications: intraoperative lacerations of the abdominal aorta and median sacral artery, an arteriovenous fistula between the left common iliac artery and vein detected 19 days postdiskectomy, and a partially thrombosed aortic aneurysm with an arteriovenous fistula between the aneurysm and the inferior vena cava, diagnosed 11 months after surgery. The majority of cases in the literature of vascular injury in lumbar disk surgery were reported prior to 1965. Diagnostic approaches described in that period do not reflect the great range of diagnostic techniques available today. Angiography remains the gold standard for diagnosis and guidance as to surgical repair. However, a high index of suspicion based on clinical signs and/or the use of sonography or CT is important in the detection of these complications.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-0428
    Keywords: Streptozotocin-diabetes ; B-cell hyperplasia ; B-cell regeneration ; A2-cell hyperactivity ; rat immunoreactive insulin ; gut glucagonocytes ; β-cytotrophy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Par des doses différentes de Streptozotocine i.v. on provoque chez des rats un diabète d'une durée de 4 à 10 mois. On note une hyperglycémie sévère, une acétonémie et une augmentation modérée des acides gras. La prise de poids est diminuée de façon marquée. — Il existe une nette corrélation réciproque entre la quantité d'agent diabétogene injecté et l'insuline immunoréactive plasmatique (IRI). On trouve le même rapport entre le nombre des cellules B et la quantité de Streptozotocine. On note une corrélation directe entre le nombre des cellules B et l'IRI. — L'hypertrophie des cellules B est importante alors qu'on ne trouve que peu de signes de régénération des îlots et des cellules B. — Chez un des rats on note l'apparition d'un adénome á cellules B fonctionnant, provoquant une normalisation du métabolisme glucidique. — Chez les animaux diabétiques, les cellules A2 prédominent et le diamétre moyen des noyaux est augmenté. On ne note pas d'augmentation significative des glucagonocytes de la muqueuse duodénale. Nous considérons que cette augmentation de l'activité des glucagonocytes est fonction de l'hyperglycémie permanente et de longue durée.
    Abstract: Zusammenfassung Mit verschiedenen Dosen von Streptozotocin i.v. wird bei Ratten ein 4–10 Monate dauernder Diabetes induziert. Es resultiert eine schwere Dauerhyperglykämie, Acetonämie und ein mäßiger Anstieg der freien Fettsäuren. Die Gewichtszunahme ist wesentlich reduziert. Es besteht eine klare reziproke Korrelation zwischen injizierter Menge des diabetogenen Agens und Plasma-IRI. Ein gleicher Zusammenhang besteht zwischen der Zahl der B-Zellen und Streptozotocin. Eine direkte Korrelation findet sich für B-Zell-Zahlen und IRI. Die B-Zellen sind ausgeprägt hypertrophisch, während sich nur geringe Anhaltspunkte für B-Zellregeneration finden lassen. Bei einem Tier entwickelt sich ein funktionierendes B-Zelladenom mit konsekutiver Normalisierung des pathologischen Zuckerstoffwechsels. — Bei den diabetischen Tieren überwiegen die A2-Zellen stark, und gleichzeitig ist der mittlere Kerndurchmesser vergrößert. In der Duodenalschleimhaut besteht keine signifikante Vermehrung der Glucagonocyten. Wir interpretieren diese Aktivitätszunahme der Glucagonocyten als Ausdruck der fixierten und langdauernden Hyperglykämie.
    Notes: Summary Diabetes was induced in rats with various single i.v. doses of streptozotocin. The rats were killed 4–10 months thereafter. Marked hyperglycaemia, ketonaemia and a rise of plasma free fatty acids resulted. The weight increase was markedly reduced. There was a clear reciprocal correlation between the injected dose of the diabetogenic agent and plasma IRI. The same was true for the B-cell counts. There was a marked B-cell hypertrophy, whereas we found only slight indication for B-cell regeneration. In one animal a functioning B-cell adenoma developed and almost all the parameters tested were normalized. In the diabetic animals the A2-cells were predominant in the islets of Langerhans and their mean nuclear diameters were increased. In the duodenal mucosa no increase in the number of glucagonocytes was found. We interpret this activity of the glucagonocytes as a consequence of permanent and long-lasting hyperglycaemia.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1084
    Keywords: Endometriosis ; Bladder ; Ultrasonography ; Computed tomography ; Cesarean section
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report ultrasonographic and CT findings in a patient with endometriosis of the bladder wall after cesarean section. Endometriosis is defined as ectopic endometrial tissue which responds to the endocrine changes of the menstrual cycle [1]. The incidence of the condition may be as high as 20% of all menstruating women [2]. The most common locations of endometriosis are in the true pelvis, particularly the fallopian tubes and the ovaries. The sacrouterine ligaments and Douglas' cul-de-sac are also frequently affected. Rarer sites of endometriotic implants include the gastrointestinal tract, urogenital organs, and extraabdominal sites. The diagnosis is suggested by the results of modern imaging techniques and the usually typical clinical findings and is confirmed by histopathology of a surgical specimen. The literature contains few reports on ultrasound and computed tomography (CT) findings in patients with endometriosis [3, 4].
    Type of Medium: Electronic Resource
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